I thought NVaero would be the answer to this question, but apparently not. Their website offers only "kits" containing wood, glue, and plans, without a way to buy just the things you don't already have. Also, they supply only premade spars and Diehl wing skins.
I realize providing lots of premade parts is the best way for NVaero to make money. But is there also a supplier somewhere for people who wants to build a KR from scratch? Mike Taglieri